sqlalchemy-sugar 0.1.1

select/delete wrapper for SQLAlchemy Asyncio

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Description: SQLAlchemy Sugar: sugar syntax of select/delete functions of SQLAlchemy, especially asyncio.

In SQLAlchemy document , the original Asyncio API of SQLAlchemy is like below:

engine = create_async_engine("sqlite:///:memory:")

async with AsyncSession(engine) as session:
    stmt = select(A).options(selectinload(A.bs))
    result = await session.execute(stmt)
    for a1 in result.scalars():
        print(a1)

    result = await session.execute(select(A).order_by(A.id))
    a1 = result.scalars().first()
    a1.data = "new data"
    await session.commit()

but with this wrapper:

from sqlalchemy_sugar import select

engine = create_async_engine("sqlite:///:memory:")

async with AsyncSession(engine) as session:
    for a1 in await select(A).options(selectinload(A.bs)).scalar(session):
        print(a1)

    a1 = await select(A).order_by(A.id).first(session)
    a1.data = "new data"
    await session.commit()

And also, deleting row is like below:

async with AsyncSession(engine) as session:
    stmt = delete(A).filter_by(data="a2")
    await session.execute(stmt)

but with this wrapper:

from sqlalchemy_sugar import delete

async with AsyncSession(engine) as session:
    await delete(A).filter_by(data="a2").execute(session)

SQLAlchemy document: https://docs.sqlalchemy.org/en/14/orm/extensions/asyncio.html#sqlalchemy.ext.asyncio.AsyncScalarResult

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